<%@ page contentType="text/html;charset=UTF-8" %>
<%@ page isELIgnored="false"%>
<%
  request.setAttribute("username","zhangsan");
  request.setAttribute("password","123456");
  request.setAttribute("age",18);
%>
<%= request.getAttribute("username") %>
${username}
<br>
${password}
<br>
${[age]}
<br>
${[age]}
<br>
